ul,
li {
    list-style: none;
}

.floor div {
    width: 800px;
    margin: 0 auto;
    height: 750px;
    border: 3px solid red;
}

.fixedtool {
    position: fixed;
    top: 50%;
    left: 100px;
    width: 66px;
    background-color: #fff;
    cursor: pointer;
    /* 鼠标箭头转化为小手 */
}

.fixedtool li {
    width: 100px;
    height: 32px;
    line-height: 32px;
    text-align: center;
    font-size: 12px;
    border: 1px solid #ccc;
}

.current {
    color: #fff;
    background-color: rgb(104, 8, 8);
}